I found the pamphlets interesting and relating to various subjects of mine, Prehistoric man's acquaintance with the elephant seemed to be established by the finding of that well-known "elephant pipe" and by the "elephant mound" — in Minnesota, is it?
We read rather often of petrified bodies of human beings, but authentic instances are very rare. I suppose you have seen the body of a Peruvian miner, now in the American Museum of Natural History, New York City. I think that he should be described as "cuprified" — preserved by salts of copper. Somewhere I have a note upon an iron ring that was found in a lump of coal. If I can find it, I'll send it to you.
39 (A) Marchmont Street, W.C.,